Improvement in stench-traps



P. w. DOHERTY.

stench-Traps.

No 1-34 652 Patented Jan-7, 1873.

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UNITED STATES PATENT ,OFFIcE.

PATRICK w. DOHERTY, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN STENCH-TRAPS.

Specification forming part of Letters Patent Nol34,652, dated January 7, 1873.

To all whom it may concern:

Be it known that I, PATRICK W. DOHERTY, of Boston, in the county of Sufi'olk and State of Massachusetts, have invented certain new and useful Improvements in Stench-Traps; and that the following is a full, clear, and exact description of the same, reference being had to the accompanyingdrawing.

The present invention relates to stenchtraps for the escape-pipe of sinks, and washbasins more especially; and the invention consists of a combination of parts, as hereinafter fully explained.

In the accompanying drawing my improvements in stench-traps are illustrated, Figure 1 being a central vertical section of a stenchtrap made according to my invention.

A in the drawing represents a chamber or vessel comprising my stench-trap, to which B is the inlet and (J the outlet opening, the openings B and 0 being, respectively, located, the one at or near the lower end of the chamber, and the other at or near its top; D, an opening in upper end of chamber A, which opening is closed by a stopper, E. The inlet and outlet openings B and (J and stopper-opening D are all provided with a female-screw thread, a, which screw-thread is formed at the same time the chamber-body is cast, iron being the metal most preferable. The stopper E has a male-screw thread flange, b, to screw into the screw-threaded stopper-opening D; and at and around the joint f, between the stopper E and opening D, the packing of lead, leather, or other suitable material is to be used. This opening D at the joint is crown or bell shape, as shown, leaving an inner space, g,

PATRICK W. DOHERTY. Witnesses:

EDWIN W. BROWN, J. P. MGELROY. 

